Patent · US Expired

Method for measuring the electrophoretic mobility of particles

US4210504A · kind A · utility

3Cited by

3References

1Claims

0Family size

Assignee

Jenoptik Jena GmbH · DE

Inventors

Klaus Friedel · Jena, DE
Ehrhard Dammann · Jena, DE
Hans-Joachim Pohl · Jena, DE
Wolfgang Schutt · Rostock, DE
Hans-Ludwig Jensen · Rostock, DE

Key dates

Filing date	Feb 26, 1978
Grant date	Jul 1, 1980
Priority date	—
Expiry date	Feb 26, 1998

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/44721
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention is in concern of a method for measuring the electrophoretic mobility of particles in a liquid test sample in order to improve the precision of the electrophoretic measurement and to reduce in particular the operational expenditures in such a method. By use of considerably simple means a very precise time measurement of the mobility of particles is obtained free from any subjective influences with respect to the selection of the particles to be evaluated and to the time measurement. Accordingly, signals variable with respect to their frequency and visualized on the screen of a monitor are derived from out of video synchronization pulses, said signals are logically combined to the digitalized adjustable image scanning signals, improved in their signal-to-noise ratio. The output signals of this combination effect a counting operation dependent on the particle mobility.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.